Preparation of new nitrogen-bridged heterocycles. 45. Smooth hydrolysis of 6-membered heterocyclic 2-imines with partial aromaticity

DOI: 10.1248/cpb.46.1632

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Chemical and Pharmaceutical Bulletin p. 1632 - 1634 (1998)

Update date:2022-08-30

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Authors:

Kakehi, Akikazu

Ito, Suketaka

Suga, Hiroyuki

Takano, Satoshi

Hirata, Kazuyuki

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Article abstract of DOI:10.1248/cpb.46.1632

The treatment of 2H-pyrano[2,3-b]indolizin-2-imines and 2H-thiino[3,2- a]indolizin-2-imines with acetic acid at reflux temperature smoothly afforded the corresponding 2H-pyrano[2,3-b]indolizin-2-one and 2H-thiino- [3,2a]indolizin-2-one derivatives in moderate to good yields. An X-ray analysis of a 2H-thiino[3,2-a]indolizin-2-one derivative was also performed.

Full text of DOI:10.1248/cpb.46.1632

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